<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
         .wrap {
             display: -webkit-box;
             -webkit-box-orient: horizontal;
         }
         .child {
             min-height: 200px;
             border: 2px solid #666;
             -webkit-box-flex: 1;
             margin: 10px;
             font-size: 100px;
             font-weight: bold;
             font-family: Georgia;
             -webkit-box-align: center;
         }
    </style>
</head>
<body>
    <div class="wrap">
        <div class="child">1</div>
        <div class="child">2</div>
        <div class="child">3</div>
    </div>
</body>
</html>